Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/945917
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dc.contributor.authorRIBEIRO, J. do S.pt_BR
dc.contributor.authorGONÇALVES, T. de M.pt_BR
dc.contributor.authorLADEIRA, M. M.pt_BR
dc.contributor.authorTULLIO, R. R.pt_BR
dc.contributor.authorCAMPOS, F. R.pt_BR
dc.contributor.authorBERGMANN, J. A. G.pt_BR
dc.contributor.authorMACHADO NETO, O. R.pt_BR
dc.contributor.authorCARVALHO, J. R. R. dept_BR
dc.date.accessioned2013-01-22T11:11:11Zpt_BR
dc.date.available2013-01-22T11:11:11Zpt_BR
dc.date.created2013-01-22pt_BR
dc.date.issued2012pt_BR
dc.identifier.citationRevista Brasileira de Zootecnia, v. 41, n. 4, p. 1009-1015, 2012.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/945917pt_BR
dc.descriptionThe objective of this study was to study the animal reactivity and correlate it with performance and meat quality of cattle finished in feedlots. A total of 20 animals of the Tabapuã breed and 20 animals of the Nellore breed were confined for 112 days: 28 days of adaptation and 84 days of data collection. Performance was determined by the average daily weight gain (ADG) and average dry matter intake (DMI) estimated through the use of indicators. On the 1st, 42nd and 84th days of the experiment, two methods were used to measure the animal reactivity: animal reactivity in mobile cage and visual reactivity during handling. The characteristics of meat quality were evaluated by the color, shear force and pH24 after slaughter (pH24). Through the study of correlation, the degree and direction of linear association on animal reactivity, performance and meat quality were established. Regression equations were generated for the parameters evaluated according to the values of animal reactivity. Correlations between mobile cage and visual reactivity were 0.77, 0.56 and 0.45 in the 1st, 2nd and 3rd evaluations, respectively. There was no correlation between animal reactivity and DMI. The correlations between ADG, pH24, and color with animal reactivity were -0.31, 0.40, 0.47 and -0.34, and -0.33 for mobile cage, 0.74, 0.71 and -0.51, for visual reactivity, respectively. The parameters of meat quality varied according to the reactivity. Undesirable values of pH24, animal reactivity and color were found when mobile cage reactivity was higher than 780, 590 and 540, respectively. In general, animals that show greater reactivity tend to have lower daily weight gain and lower meat quality. The reactivity can be used in animal breeding programs, in order to improve performance and meat quality of Zebu cattle finished in feedlot.pt_BR
dc.language.isoengpt_BR
dc.rightsopenAccesspt_BR
dc.subjectBovinept_BR
dc.titleReactivity, performance, color and tenderness of meat from Zebu cattle finished in feedlot.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-03T11:11:11Zpt_BR
dc.subject.nalthesaurusmeat qualitypt_BR
dc.subject.nalthesaurustemperamentpt_BR
riaa.ainfo.id945917pt_BR
riaa.ainfo.lastupdate2016-03-03pt_BR
dc.contributor.institutionJULIMAR DO SACRAMENTO RIBEIRO, Universidade Federal de Alagoaspt_BR
dc.contributor.institutionTARCISIO DE MORAES GONÇALVES, Universidade Federal de Lavraseng
dc.contributor.institutionMÁRCIO MACHADO LADEIRA, Universidade Federal de Lavraseng
dc.contributor.institutionRYMER RAMIZ TULLIO, CPPSEeng
dc.contributor.institutionFABRÍCIO RODRIGUES CAMPOS, Universidade Federal de Lavraseng
dc.contributor.institutionJOSÉ AURÉLIO GARCIA BERGMANN, Universidade Federal de Minas Geraiseng
dc.contributor.institutionOTÁVIO RODRIGUES MACHADO NETO, Universidade Federal de Lavraseng
dc.contributor.institutionJOSÉ RODOLFO REIS DE CARVALHO, Universidade Federal de Lavras.eng
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